35 citations · 61 across the 7 of their papers we have counts for
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Investigation of the Nature of the B[e] Star CI Cam in the Optical Range
E. A. Barsukova, A. N. Burenkov, V. P. Goranskij +10
We report the results of 24 years of photometric and spectroscopic monitoring of CI Cam since its outburst in 1998. In the early years of our research, we identified a system compo…
An eccentric wave in the circumstellar disc of the Be/X-ray binary X Persei
R. K. Zamanov, K. A. Stoyanov, U. Wolter +7
We present spectroscopic observations of the Be/X-ray binary X Per obtained during the period December 2017 - January 2020 (MJD~58095 - MJD~58865). In December 2017 the , ,…
Spectroscopy of close visual binary components of the stable shell star 1 Del
Jiří Kubát, Brankica Kubátová, Barbora Doležalová +2
Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its cont…
Binary properties of subdwarfs selected in the GALEX survey
Adela Kawka, Andrzej Pigulski, Simon O'Toole +6
We describe our programme to identify and analyse binary stars among the bright subdwarfs selected in the Galaxy Evolution Explorer (GALEX) survey. Radial velocity time-series help…
On the nature of the Be star HR 7409 (7 Vul)
S. Vennes, A. Kawka, S. Jonic +6
HR 7409 (7 Vul) is a newly identified Be star possibly part of the Gould Belt and is the massive component of a 69-day spectroscopic binary. The binary parameters and properties of…
Spectroscopic analysis of the B/Be visual binary HR 1847
J. Kubát, S. M. Saad, A. Kawka +9
We studied both components of a slightly overlooked visual binary HR 1847 spectroscopically to determine its basic physical and orbital parameters. Basic stellar parameters were de…
Properties and nature of Be stars: 27. Orbital and recent long-term variations of the Pleiades Be star Pleione = BU Tauri
J. Nemravová, P. Harmanec, J. Kubát +8
Radial-velocity variations of the H-alpha emission measured on the steep wings of the H-alpha line, prewhitened for the long-time changes, vary periodically with a period of (218.0…